19402143600 has 240 divisors, whose sum is σ = 73322608640. Its totient is φ = 4291660800.

The previous prime is 19402143599. The next prime is 19402143619. The reversal of 19402143600 is 634120491.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 223146 + ... + 297654.

Almost surely, 2^19402143600 is an apocalyptic number.

19402143600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19402143600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36661304320).

19402143600 is an abundant number, since it is smaller than the sum of its proper divisors (53920465040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19402143600 is a wasteful number, since it uses less digits than its factorization.

19402143600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74568 (or 74557 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 19402143600 in words is "nineteen billion, four hundred two million, one hundred forty-three thousand, six hundred".